Wire bending mechanism



May 3, 1932. w. DALHl-:lMER

` WIRE BENDING MEGHANISM Filed oct. 8, 192e 2 Sheets-sheet 2 finuenor Wa//zeimer l Patented May 3, 1.7932` eem-eme- .essreree per; SIGNMEN'TS; mo firmato ooRPoRA'roNeor AMERICA; or" Nnwonm N. Les COR;

PGRATION o1? DELAWARE WIRE BENDING MoHA-NISM r Application nieaoetoter 8,1926, seriei'Nmios; and in the Netherlands November 27, lett;- Y

This inyent'on rla'testo neans forl bend-V ing wires' and more particularly vfor bend-A ing' wiresseveral times through a determined a'ii'gle known'. With th'e'se known eans" bending is mostly4 ensured' by the use of al stencil` ora punchl with a matrix. `The wire may be l simplyy bentaroiin'd a vcorner. f lf'a wire is' 1'6 tob'e given several tends, several movements" arie in this latter ,ease reqr'rired', for this purpose. 'Tlie use of apuich and matrix obviates' this"incol'veieiice', but' it isv` diiiicfult"y Yth's` .ca 'sejvto vary the distance between the tance btfweehthe two' adjacentE1 2.0y points of the holders' rernain"A ii'nch'aige'd'.`

The Aadyantage of this arrangement is`l that by Y a simultaneous Iuoyenie,nt.'` of the .holders a'holde'r aA change in length of said partof thewifeiseasily mende.,V ,e e e l o One' embodiment of'v the invention' coni"- r prieeeeemevame and o: Stationary-homer e'ria during its'inotionthefnoyable holder moves o`r swings in an ar'eof circle having as-'its each Of which' isiconneet'ed by an arin or link t`o` affixed.l pivot. lThief*length, of! each ofthe three' arrsA or links" i's equalized3 witlif 4" the length of that,A part ofthe wire between the Holders; It is desirable that the amis ollinksshouldbe adjustabley to vary in a simple'mannerthe distaneebetwee the tw y i, ,x l rI,leemli.potlurer, According to the interfree the wrr'egiei movable holer`V may' be provided witli an aperture which the' wire caribe insert'e'd ortlienioyablefholder mayL ha've mdrintedI it agehuc'k yeornpr'islf Q anadjust'able stop andas'lida'ble c'glanpf-` Wing jaw, the arrangement being" such that" thev wire clarnpedhetween this clamping jawmandathe stop. In. the former/,case it is; inipossible to change the position of the grip?v ping point of the inoyable holder relatively to :thatofthe stationary holder. Thisin-Vy convenience has been obviatedby providing an adjustable stop. with'a clampin'gfpiece.'

I-nwan embodiment'of the inventionK in which thewires are beuttwic atA right angles f the adjacent sides 0f .thesmovable aspwell as ofthe stationary holder, are; fiatl and' par` allel to eachpgotlgier, thef-mbvableholder beings@ moved thlt after the bending opera'- tionat.r1ghtangles theasai-dV sides bear on Thisl arrangement isY applicable to` bending supportingandlleadin'gein `wires-of Steins of electrlolamps,- electron discharge tubes' and' similarselect-ric devices. 'In suchV deyicesithe'j leading-in; wiresl areisealedl i'rl the stem and' subsequentlfythey'are bent? into aiy deteimined( position so Y astof permity of the filament being attached.- ,In' the case of electron dis' charged' tubes the anode" has sometimes to be brought intoa definite position relatively to' thepinohedfpbrtion O'r pressof' the'steni and in th'atfease'it may bef necessary for thef'anode" supporting wires to" be AbentV twice at right anglesi One device serving toben'di the le'dsj andh supporting wires' of-slch' ste-ins comprises' various y-Inovable holders' each of which isf intended for oneV ofthe wires'i If some" ofthe" supportingjwires have 'tobe'bentoppo'sit'el'yY t'ol the otherlsupp'orting'- wires ohe'party of the holders@ isfgiyena" clockwise and the rel maining-partananticlbckwisefniotion;`-

The accompanying drawings illustrateE an' enibodiniei'trv of thel invention: In the'y said drawings Figures v`l, 2,;3 and 4 represent dia'- grainmaticallyf the positions of` the various holdersL duringthe-operation: upon: the wire' Figure 5 isfai longitudinal section of; thefwire Chuck ShQWn nFg- ,4,5 Figure @shows da? gralniuatically another position oftheholdf ers; Figureis aside View oa-suitablecon-i struction` in; which:the slip[')orting.'wirgles and and 2, and hence to the length of the free por-' of Fig. 7, and Figures 9 and lOkare perspective views of a thermionic valve stem prior and subsequent to the bending operation.

In the irst six figures like reference 11u-- merals indicate similar parts. 1 and 2 indicate the jaws ofastationa-ry wire chuck, and

3 is a movable member provided with a wire holder, such as anaperture 4, for receivingand holding awire 5. The member 3 is movably mounted'by .means of pivoted arms or links 6 each connected at one end to stationary studs 7 and atthe other end to pins 8in the member 3 so as to` permit this member 3 to swing or describe an arc about the stationary studsjf.YV

When the wire 5 is Vfed tlielchuck lj aws 1 and 2 remain open untilthe wire has been insertedk rin the holder or aperture 4 of the member 3. The jaws 1 and 2 are then closed as shown in Figure 2 andthe member 3 is swung about the studs'7, and so Ifollows an arcuate path of' about 90 around the studs 7 into vthe position shown in Figure 3. The distancebetween theV pins Sand the studs 7-V is--equal to thedistance between the member 3 and the jaws 1 I tion ofthe wire 5, thus ensuring that during the swing or travel of the member 3 along itsL arcuate path the distance betweenthe grippingpoints of the jaws 1 and 2 and the -member 3 remains unchanged and any VkinkV in the wire is avoided.

A different construction is shown in Figures 4, 5, and 6 inV which the movable member 3 is provided with a wire chuck comprising an adjustable stop 9 and a movable jaw 10. The

"i positions.

adjustable stop 9 is providedwith slots l11 to permit it to be moved over the adjusting bolts 12. Themovable jaw 10 is provided with two studs13 that guide it in a slot 14 in y vthe member 3. yA lug 15 onithe jaw 10 is connected by a spring 16-with a studon the member 3 so that the jaw 10. is resiliently held vagainst the stop 9. In Figure 4 and in Figure 6 this ywire chuck is shown in two different jaws 1 andi-2 and in the jaws 9 and 10 are in alignment with each other. In Figure 6 a position is shown in which these two clamped portions are out of alignment but parallel to each other. .This construction permits slightV variations'in the length of wire intermediate the bends. Y

55.v struction by which a plurality of wires 33 In Figures 7 and 8 is shown a` suitable consealed into the press of the stem 18 of a thermionic valve (Figure 9)v are each bent twice at right angles and-some are bent toons side Vof the'press and others to the other side.

For this purpose two movable members or holders 21 and 22 are mounted like the movable member 3. beside the jaws 19 and 20 of a stationary chuck for holding the wires 33. -To 'hold 'each wire these movable members n In Figure 4 the position is such n that the clamped portions of the wire in the may be provided with an aperture,as shown in Figs, 1, 2, and 3, or with a stop and jaw as shown in Figs. 4, 5, and 6. The two movable members shown in Figures 7 and 8 hold the proj ectingends of lthe wires 33 by means of wire holding apertures;23 and 24 (Figure 8) provided in prongs Vwhich project from nthe' adjacent ends' of the members 21 and 22 and are so ,positioned as to overlap. To `swing eachv of the movable members or holders in an arcuate path Vlike that Vof the member 3 in Figs. 1, 2, and 3, each of said movable members 21 and 22 is provided with pins 28 and 29 which by means of arms or links 27 are connected to stationary studs 25 and 26. The two movable members 21 and 22 are swung apart or moved away from each other to bend some of the wire 33 in one direction and others in the opposite direction,fas

shown in Figure 10. To swing them apart the members may have rollers 30 and 31 which bear on the flat sides of an 'actuating As the wedge moves in the direc'-` tion of the'. arrow in Figure 7 the movable wedge" 32.

members 2l and 22 are driven apart and each swingsv through' an f arcuate path about. the

fixed studs`25- and'26. As a result of this'l separation of the members-21 and 22 partei' the support wires 33 ofthe thermionicV valve stem 18 are bentto the left and the remaindery to the right, as shown in Fig. ,10.` vAs the wedge 32 ymoves in the opposite direction the movable members 21 and 22 are returned to their original positionl byy a spring 34 which tends to pull them together.

What I claim is :e v 1. A wire bending device comprising a stationary chuck for holding the wire, a movable member having atleast one pair of ots, arms mounted uponl said pivots to permit said' member to swingV upon said.' arms, a

A second chuck mounted upon said member'in` alignment and spaced from the first chuck and comprising a slidable spring pressed jaw, and means to move the member.

l 2. A wire bending'device' omprising a stationary chuck yfor gripping the wire, a member mounted to swing along an arcuate path, pivots 'on' said member, arms mounted upon said pivots, a second chuck mounted upon Vsaid member in alignment with and spaced from thelirst chuck and comprising one adjustable jaw and one slidable spring jaw, f and means to move the mem-Av aser-,L19

4. A wire bending device comprising a stationary chuck for gripping the wire, a

member mounted to swing along an arcuate the wires, a plurality of members mounted for parallel movement in diiierent directions, a plurality of wire holders on each member in alignment withand spaced from the stationary chuck and each adapted to hold one wire, and means to move saidlmembers.

6. A Wire bending device for bending a' plurality of wires in diilerent directions comprising a stationary clamp for gripping all the wires, a plurality of members each having pivots and mounted for movement in different directions, arms mounted upon the pivots on said members to give the members parallel movement, a plurality of wire holders on each member in alignment with and spaced from the stationaryclamp and each adapted to grip one wire, and means to move said members.

7. A wire bending device for bending a plurality oi1 wires in different directions coniprising a stationary clamp for gripping all the wires, a pair of members mounted for parallel movement in opposite directions, a plurality of wire holders in each member in alignment with and spaced from the stationl ary clamp and each adapted to grip one wire,

and mea-ns tomove said members.-

S. A wire bending device for bending a plurality of electrode supporting wires comprising a stationary clamp for gripping all the wires, a pair of members mounted for movement in opposite directions and eac-h having pivots, arms mounted upon the pivots on said members to give the members parallel movement, a plurality of wire holders upon each member in alignment with and spaced from the stationary clamp and each adapted to hold one wire, and a cam for engaging and moving said members.

9. A wire .bending device yfor bending a` plurality of electrode supporting Wires comprising a stationary clamp for grippingvall the wires, a pair of members Vmounted for movement in opposite directions and each having pivots, arms mounted upon the pivots on said members to give the members parallel L movement, a plurality of wire holders upon each member in alignment with and spaced from the stationary clamp and'each adapted to hold one wire, a cam. for engaging said members to movethem-and a spring tokeep the members in contact with the cani. f. .K

10. A Wire bending deviceforbending a plurality of electrode sup-porting` wires comprising a stationary clam'plforr gripping all thewires,.a `pair of members mounted for movement in opposite :directions and each havingy pivots, arms mounted upon the pivots v on said members to give the members parallel movement, a plurality of wire holders" upon cach` member in alignment ywith andspacedV from the stationary clamp andv each adapted to hold one Wire,.a. reciprocating camen-gagingV both members and pressing them; in. opposite directions, and a spring to return the members to the original position.

v1 -1.A v:/ire bending device kkfor bending a pluralityof electrode supporting wires comprising a stationary cliuckhavin'g two mov-A able jaws forfgripping allthe wires, a pair of pivoted members mounted for movement in opposite directions, arms mounted upon the pivots of said members to. give the members parallel movement, and a plurality of wire holders uponeacli member in alignment with the stationary chuck and spaced therefromV and each adapted to hold one wire.

12. A wire bending device for bending a plurality of electrode supporting wires comprisingv a stationary clamp for gripping all the wires, a pair-of members mounted for movement in opposite directions and each having pivots, armsmounted upon the pivots on said members to give the members parallel movement, a plurality of clamps upon each member in alignment with and spaced from the stationary clamp and each adapted to grip one wire, a spring pressed `jaw for each ofsaid plurality of clamps, anda cam for engaging the members to move them.

13. 'A wire bending'device for bending a plurality of electrode supporting wires compri-sing a stationary'cla'mp for gripping all the wires, a pair of pivoted members mounted "for movement kiii opposite directions, arms mounted upon pivots on said members to give the members parallel movement, a plurality yof clamps upon each member in alignment with and spaced from the stationary clamp and each adapted to grip one wire,

a spring pressed jaw for each of said pluralstationary chuck for holding a plurality of wires, two wire holders mounted to register with and engage diierent wires held in said chuck and each movably mounted to move in an arcuate path transversely of the wire engaged by it and to remain during its movement along its path parallel to said chuck, and common actuating means for moving` said holders away from said chuck in opposite directions flo-bend two of saidwires `in opposite directions. 15. A wire'bending device comprising a stationary chuck for holding a plurality of 5 wires yside by side, two movable holders vmounted to reaister vsimultaneously with saidl chuck and engage di'erent wires held in said chuck and to move in parallel arcuate paths transverse to the wires in said chuck and to i remain parallel to said chuck duringtheir movement along' their paths, and common actuating means'for moving said holders simultaneously away from each other and out of registry with said chuck whereby the wires 15 engaged by said holders are bent in opposite directions. Y

In testimony whereof I aiX my signature at the city of Eindhoven, this 21st day oSepte1nber,A. D. 1926. A i 20 WALTHER DALHEIMER. 

